package api;

import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONUtil;
import lombok.SneakyThrows;
import model.UserInfo;
import util.AppVar;
import util.DBUtils;
import util.ResultUtil;
import util.SessionUtils;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.DataBuffer;
import java.io.IOException;
import java.sql.Connection;
import java.sql.JDBCType;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

@WebServlet("/addart")
public class AddArticleServlet extends HttpServlet {
    @SneakyThrows
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String msg="未知错误！";
        int data=0;
        //验证登录状态
        UserInfo userInfo= SessionUtils.getLoginUser(req);
        if(userInfo!=null){
            //1.得到并验证参数
            String title= req.getParameter("title");
            String context=req.getParameter("context");
            if(!StrUtil.isBlank(title)&&!StrUtil.isBlank(context)){
                //2.插入数据到数据库
                Connection connection= DBUtils.getConnection();
                String sql="insert into article(title,context,uid) values(?,?,?)";
                PreparedStatement statement=connection.prepareStatement(sql);
                statement.setString(1,title);
                statement.setString(2,context);
                statement.setInt(3,userInfo.getUid());
                data=statement.executeUpdate();
                msg="";
                //关闭资源
                DBUtils.close(null,statement,connection);
            }else{
                msg="参数错误";
            }
        }else{
            msg="请先登录！";
        }
        //3.将结果返回给前端
        resp.setContentType(AppVar.RESPONSE_CONTENTTYPE_JSON);
        resp.getWriter().println(JSONUtil.toJsonStr(ResultUtil.toResult(
                200,data,msg)));
    }
}
